According to classical Indian thinkers, in which of the following means of knowledge, we accept a fact or principle for explaining an undeniable fact, which otherwise cannot be explained?
Postulation (Arthāpatti)
Understanding Means of Knowledge in Classical Indian Philosophy
Classical Indian philosophy explores various valid means by which we acquire knowledge. These means are often called 'Pramanas'. The question asks about a specific Pramana where we assume a fact or principle to explain another fact that is undeniable but cannot be explained without this assumption.
Analysing the Given Means of Knowledge (Pramanas)
Let's look at the options provided and understand what each means:
- Non-Cognition (Anupalabdhi): This is the means of knowing the absence of something. For example, knowing that there is no pot on the table because you don't see it, even though you are looking where it should be and conditions are right for seeing it. This is about perceiving absence, not explaining a fact by assuming another.
- Comparison (Upamāna): This is knowledge gained through analogy or similarity. For example, if you've never seen a 'gavaya' (a wild ox), but someone tells you it is like a cow, you can identify a gavaya when you see one based on this comparison. This involves relating something unknown to something known based on resemblance.
- Verbal Testimony (Śabda): This is knowledge acquired from a reliable source, typically through words, be it spoken or written (like scriptures). For example, learning historical facts from a trusted history book or geographical information from a map. This knowledge depends on the credibility of the source.
- Postulation (Arthāpatti): This means literally translates to 'implication' or 'presumption'. It is the assumption of an unperceived fact to explain a known fact that cannot otherwise be accounted for. This fits the description in the question exactly.
Focusing on Postulation (Arthāpatti)
Arthāpatti is the process of inferring a premise from a fact. A common example is: "Devadatta is alive, and he is not at home during the day. How can a living person not be at home during the day?" The only way to explain the fact that Devadatta is alive and not at home during the day is to assume or postulate that "Devadatta goes out during the day".
Here, the undeniable fact is: Devadatta is alive AND not at home during the day.
This fact cannot be explained unless we accept the principle/fact: Devadatta goes out during the day.
Therefore, Arthāpatti is the means of knowledge where we accept a fact or principle (Devadatta goes out during the day) for explaining an undeniable fact (Devadatta is alive and not home during the day) which otherwise cannot be explained.
Based on this analysis, Postulation (Arthāpatti) is the correct answer as it perfectly matches the description given in the question.
| Pramana (Means of Knowledge) | Nature | Example |
|---|---|---|
| Anupalabdhi (Non-Cognition) | Knowledge of absence | Knowing 'no pot' on the table because it is not perceived. |
| Upamāna (Comparison) | Knowledge via similarity/analogy | Identifying a gavaya because it is 'like a cow'. |
| Śabda (Verbal Testimony) | Knowledge from reliable source | Learning facts from a trusted book. |
| Arthāpatti (Postulation) | Assuming a fact to explain another inexplicable fact | Assuming Devadatta goes out to explain his absence from home during the day while being alive. |
Revision Table: Key Indian Means of Knowledge
Understanding these pramanas is fundamental to classical Indian epistemology.
| Sanskrit Term | English Equivalent | Core Idea |
|---|---|---|
| Pratyak&ṣ;a | Perception | Direct sensory experience. |
| Anumāṇa | Inference | Knowledge derived from a reasoned argument based on observation. |
| Upamāna | Comparison/Analogy | Knowledge based on resemblance to something known. |
| Śabda | Verbal Testimony | Knowledge from reliable sources. |
| Arthāpatti | Postulation/Presumption | Assuming a fact to explain another inexplicable fact. |
| Anupalabdhi | Non-Cognition/Non-Perception | Knowledge of absence. |
Additional Information on Pramanas
Different schools of classical Indian philosophy accept varying numbers of pramanas. For example, the Cārvāka school only accepts Perception (Pratyak&ṣ;a). Nyāya accepts four: Perception, Inference, Comparison, and Verbal Testimony. Sā&ṅ;khya accepts three: Perception, Inference, and Verbal Testimony. The Bhattā school of Mīmā&ṁ;sā and the Advaita Vedānta school accept all six mentioned above: Perception, Inference, Comparison, Verbal Testimony, Postulation, and Non-Cognition.
The concept of Pramana is crucial because it deals with the sources and validity of knowledge, which is a central topic in epistemology.
Important Questions from Pramanas - Teaching
Consider the following example given below:
Devadatta is growing fat.
He does not eat food during the day.
Therefore, he must be eating food during the night, other things being equal.
Identify the logic involved in the example provided above by choosing the correct
answer from the options given below:
Assumption of an unperceived fact in order to reconcile two apparently inconsistent perceived facts is known in Indian Logic as:
Anil's participation in the classroom is indifferent. His parents do not find him to be active either. But his performance in examinations ranges from being good to outstanding. Therefore, he must be studying privately in a clandestine way. This is an example of which kind of Pramana?
The knowing self knows objects through the instrumentality of the sense organs (Indriyas) but the existence of Indriya is proved by
Which one of the following sources of knowledge (pramana) in classical Indian Philosophy is based on similarity of the unobserved object with a known object?
